//
//  VistView.swift
//  swift微博
//
//  Created by CC on 16/2/26.
//  Copyright © 2016年 CC. All rights reserved.
//

import UIKit

//1.定义协议
protocol VistorViewDelegate : NSObjectProtocol {
   
    func cregisterButtonClick()
    func cloginButtonClick()
}


class VistView: UIView {

    //2.定义代理属性
    weak var VistorButtonDelegate: VistorViewDelegate?
    
    //3.调用代理方法
    func registerButtonClick(){
        VistorButtonDelegate?.cregisterButtonClick()
    }
    
    func loginButtonClick(){
        VistorButtonDelegate?.cloginButtonClick()
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        self.backgroundColor = UIColor(white: 237/255.0, alpha: 1)
        
        prepareUI()
    }
 
    
    
    
    // 从xib/storyboard里面加载会走这个方法
    // 当子类实现init(frame: CGRect)就不会继承父类的构造函数init?(coder aDecoder: NSCoder),就不能从xib/storyboard里面加载
    // 只有同时实现init(frame: CGRect)和init?(coder aDecoder: NSCoder)才能保证view即可以使用代码创建,也可以使用xib/storyboar来创建
    required init?(coder aDecoder: NSCoder) {
        //        fatalError("init(coder:) has not been implemented")
        // 做自己的事情
        super.init(coder: aDecoder)
    }
    
    func prepareUI() {
        // 1.将懒加载的控件添加到父控件里面
        addSubview(iconView)
        addSubview(coverView)
        addSubview(homeView)
        addSubview(messageLabel)
        addSubview(registerButton)
        addSubview(loginButton)
        
        // 2.约束
        iconView.translatesAutoresizingMaskIntoConstraints = false
        homeView.translatesAutoresizingMaskIntoConstraints = false
        messageLabel.translatesAutoresizingMaskIntoConstraints = false
        registerButton.translatesAutoresizingMaskIntoConstraints = false
        loginButton.translatesAutoresizingMaskIntoConstraints = false
        coverView.translatesAutoresizingMaskIntoConstraints = false
        
        // 转轮 CenterX
        // 约束都添加到父控件上面
        addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0))
        
        // 转轮 CenterY
        addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterY, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.CenterY, multiplier: 1, constant: -40))
        
        // 房子
        // CenterX和转轮CenterX重合
        addConstraint(NSLayoutConstraint(item: homeView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0))
        
        // CenterY和转轮CenterY重合
        addConstraint(NSLayoutConstraint(item: homeView, attribute: NSLayoutAttribute.CenterY, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.CenterY, multiplier: 1, constant: 0))
        
        // messageLabel
        // 宽度 240
        // 注意: 当toItem为nil时,attribute必须填:NSLayoutAttribute.NotAnAttribute
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 240))
        
        // CenterX和转轮CenterX重合
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0))
        
        // Top和转轮Bottom间距16
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: 16))
        
        // 注册按钮
        // 左边和消息的左边重合
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Leading, relatedBy: NSLayoutRelation.Equal, toItem: messageLabel, attribute: NSLayoutAttribute.Leading, multiplier: 1, constant: 0))
        // Top和消息Bottom间距16
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: messageLabel, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: 16))
        // 宽度
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 100))
        
        // 高度
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 35))
        
        // 登录按钮
        // 右边和消息的右边重合
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Trailing, relatedBy: NSLayoutRelation.Equal, toItem: messageLabel, attribute: NSLayoutAttribute.Trailing, multiplier: 1, constant: 0))
        // Top和注册按钮的Top对齐
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: registerButton, attribute: NSLayoutAttribute.Top, multiplier: 1, constant: 0))
        
        // 宽度
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: registerButton, attribute: NSLayoutAttribute.Width, multiplier: 1, constant: 0))
        
        // 高度
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: registerButton, attribute: NSLayoutAttribute.Height, multiplier: 1, constant: 0))
    
        // 遮盖
        // 填充父控件
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Leading, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.Leading, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.Top, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Trailing, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.Trailing, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: registerButton, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: 0))
    
    }
    //添加其他控制器
    // 只有，消息 ，发现我需要设置访客视图
    /**
    设置访客视图
    
    - parameter imageName: 图片的名称
    - parameter message:   消息
    */
    func setUpVistorView(imageName : String , labelText : String ){
        iconView.image = UIImage(named: imageName)
        messageLabel.text = labelText
        homeView.hidden = true
        
        sendSubviewToBack(coverView)
    }
    
    //添加转轮核心动画
    func iconViewRolation(){
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.toValue = 2 * M_PI
        anim.repeatCount = MAXFLOAT
        anim.duration = 5
        
        // 动画完成的时候不要移除,不然切换到其它界面在切换回来就不会动画了
        anim.removedOnCompletion = false
        
        // 将核心动画添加到view上面
        iconView.layer.addAnimation(anim, forKey: nil)
    }
    
    // MARK: - 懒加载
    // 小房子
    lazy var homeView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
    // 转轮
    lazy var iconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
    // 消息Label
    lazy var messageLabel: UILabel = {
        let label = UILabel()
        
        // 设置
        label.text = "关注一些人,看看有上面惊喜"
        label.textAlignment = NSTextAlignment.Center
        label.textColor = UIColor.darkGrayColor()
        label.font = UIFont.systemFontOfSize(18)
        label.numberOfLines = 0
        
        return label
    }()
    
    // 注册按钮(block式懒加载)
    lazy var registerButton: UIButton = {
        let button = UIButton()
        
        // 设置
        button.setTitleColor(UIColor.orangeColor(), forState: UIControlState.Normal)
        button.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: UIControlState.Normal)
        button.setTitle("注册", forState: UIControlState.Normal)
        
        button.addTarget(self, action: "registerButtonClick", forControlEvents: UIControlEvents.TouchUpInside)
        
        return button
    }()
    
    
    
    
    // 登录按钮
    lazy var loginButton: UIButton = {
        let button = UIButton()
        
        // 设置
        button.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: UIControlState.Normal)
        button.setTitle("登陆", forState: UIControlState.Normal)
        button.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
        
        button.addTarget(self, action: "loginButtonClick", forControlEvents: UIControlEvents.TouchUpInside)
        
        return button
    }()
    //懒加载遮盖View
    lazy var coverView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))

}
